α-Alkylation of Lithiated α,β-Unsaturated Aldehyde<i>N</i>,<i>N</i>-Dimethylhydrazones. Synthesis of α-Alkylated β,γ-Unsaturated Aldehydes
作者:Masakazu Yamashita、Kaoru Matsumiya、Ken-ichi Nakano、Rikisaku Suemitsu
DOI:10.1246/cl.1988.1215
日期:1988.7.5
Lithiated α,β-unsaturated aldehyde N,N-dimethylhydrazones reacted with alkyl halides accompanying a double bond rearrangement to give α-alkylated β,γ-unsaturated aldehyde N,N-dimethylhydrazones in satisfactory yields. Using this reaction, the sesquiterpene, 2,5,9-trimethyl-2-vinyl-4,8-decadienal was synthesized.
含锂的α,β-不饱和醛N,N-二甲基脘与带有双键重排的烷基卤反应,以令人满意的产率生成α-烷基化的β,γ-不饱和醛N,N-二甲基脘。通过这一反应,合成了倍半萜烯,2,5,9-三甲基-2-乙烯基-4,8-癸二烯醛。